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Gel-liquid extraction and separation of U(VI), Th(IV), Ce(III), and Co(II)

Journal Article · · Sep. Sci. Technol.; (United States)
The gel-liquid extraction of U(VI), Th(IV), Ce(III), and Co(II) has been investigated in the 0.01 to 2 M HNO/sub 3/ range using a gel prepared by swelling styrene divinylbenzene with di-(2-ethylhexyl)phosphoric acid. Obtained results indicate that all of the tested cations can be extracted and that the extraction coefficients increase in the order Ce(III) < Co(II) < Th(IV) < U(VI) and generally decrease with acidity. Under suitable conditions, separation of Th(IV), Ce(III), or Co(II) from U(VI) or of Th(IV) from Ce(III) can be achieved. Kinetic studies indicate that the extraction process is controlled by a progressive shell sorption mechanism. 10 figures, 3 tables
Research Organization:
Atomic Energy Establishment, Cairo, Egypt
OSTI ID:
6870445
Journal Information:
Sep. Sci. Technol.; (United States), Journal Name: Sep. Sci. Technol.; (United States) Vol. 15:7; ISSN SSTED
Country of Publication:
United States
Language:
English